package com.xma.springcloud.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.xma.springcloud.common.ResponseResult;
import com.xma.springcloud.entity.Payment;
import com.xma.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

/**
 * @Author: arthur
 * @License: (C) Copyright 2020-2028, xxx Corporation Limited.
 * @Contact: 413911174@qq.com
 * @Date: 2020/7/5 21:13
 * @Version: 1.0
 * @Description:
 */
@RestController
@Slf4j
public class CircleBreakerController {

    public static final String SERVICE_URL="http://nacos-payment-provider";

    @Resource
    private RestTemplate restTemplate;

    @RequestMapping("/consumer/fallback/{id}")
    //@SentinelResource(value = "fallback")//没有配置
    //@SentinelResource(value = "fallback",fallback = "handlerFallback")//fallback只复制业务异常
    //@SentinelResource(value = "fallback",blockHandler = "blockHandler") //blockHandler只负责sentinel控制台配置违规
    //@SentinelResource(value = "fallback",blockHandlerClass = CustomerBlockHandler.class,blockHandler = "handlerException") //blockHandler只负责sentinel控制台配置违规
    @SentinelResource(value = "fallback",fallback = "handlerFallback",blockHandler = "blockHandler",
            exceptionsToIgnore = {IllegalArgumentException.class} //降级 、 限流配置、 排查某个异常
    )
    public ResponseResult<Payment> fallback(@PathVariable("id") Long id){
        ResponseResult<Payment> result = restTemplate.getForObject(SERVICE_URL+"/paymentSQL/" + id,ResponseResult.class,id);
        if(id ==4){
            throw new IllegalArgumentException("IllegalAccessException , 非法参数异常。。。。");
        }else if(result.getData() == null){
            throw new NullPointerException("NullPointerException ，该ID没有对应记录，空指针异常");
        }
        return result;
    }
    // 本例是fallback
    public ResponseResult<Payment> handlerFallback(@PathVariable Long id ,Throwable e){
        Payment payment = new Payment(id,"null");
        return new ResponseResult<Payment>(444,"兜底异常handlerFallback,exception异常 " + e.getMessage(),payment);
    }

    public ResponseResult<Payment> blockHandler(@PathVariable Long id, BlockException blockException){
        Payment payment = new Payment(id,"null");
        return new ResponseResult<>(445,"blockHandler-sentinel限流，无此流水: blockException " + blockException.getMessage());
    }

    //===============Openfegin
    @Resource
    private PaymentService paymentService;

    @GetMapping(value = "/consumer/paymentSQL/{id}")
    public ResponseResult<Payment> paymentSQL(@PathVariable("id") Long id){
       return paymentService.paymentSQL(id);
    }


}
